ANALOGUE BLOCK GAUGE

user leaflet

Part No. 501512 Issue 921.0 Index

1.0 IndexSection Title Page1.0 Index . . . . . . . . . . . . . . . . . . . . . . . 22.0 Safety Summary . . . . . . . . . . . . . . . 33.0 Introduction . . . . . . . . . . . . . . . . . . 44.0 Components of the Block Gauge . . . 55.0 Care of the Block Gauge . . . . . . . . . 76.0 Mechanical Installation . . . . . . . . . . . 86.1 Tip Installation/Replacement . . . . . . . 96.2 Tool Holder Installation/Adjustment . . 106.3 Spring Installation/Adjustment . . . . . . 116.4 Pneumatic Actuator Installation . . . . . 127.0 Maintenance . . . . . . . . . . . . . . . . . . . 137.1 Sensor Replacement . . . . . . . . . . . . 138.0 Specifications . . . . . . . . . . . . . . . . . . 158.1 Measurement . . . . . . . . . . . . . . . . . . 15

Section Title Page8.2 Mechanical . . . . . . . . . . . . . . . . . . 188.3 Environmental . . . . . . . . . . . . . . . 188.4 Electrical Interface. . . . . . . . . . . . . 199.0 Connections . . . . . . . . . . . . . . . . . 209.1 Analogue Block Gauge . . . . . . . . . 2010.0 Outline Drawings . . . . . . . . . . . . . . 2110.1 Mechanical Drawings . . . . . . . . .. . 2110.2 Configuration Drawing . . . . . . . . . . 24 Return of Goods Solartron Sales Offices

Part No. 501512 Issue 932.0: Safety Summary

2.0: Safety SummaryTerms in this Handbook WARNING statements identify conditions or

practices that could result in personal injury or loss of life.

CAUTION statements identify conditions or practices that could result in damage to the equipment or other property.

Symbols in this manualThis symbol indicates where applicable cautionary or other information is to be found.

WARNINGS:Do not operate in an explosive atmosphere To avoid explosion, do not operate this equipment in

an explosive atmosphere.

Air Pressure Under no circumstances should the recommended

maximum overpressure of 7 bar be exceeded when using pneumatics with the Block Gauge.

Operating Pressure Range Pneumatic Operation 1 to 3 Bar relative To maximise working life of the probe head when

pneumatic actuation is chosen, the air supply should be both clean and dry for continual reliable operation. Maximum relative humidly of 60% and filtered to better than 5 µm particle size.

NOTES: This equipment contains no user

serviceable parts This equipment must be returned to your Solartron

dealer for all servicing and repair.

Low Voltage This equipment operates at below the SELV

and is therefore outside the scope of the Low Voltage Directive.

Part No. 501512 Issue 943.0: Introduction

3.0: IntroductionThe Block Gauge family makes precision measurements of bores and cavities a simple and reliable process. The use of these devices is ideal in applications where space is limited and where the use of axial probes is not possible.

Both digital and analogue versions of the Block Gauge are available, with measurement ranges of ±1 mm, ±2.5 mm or ±5 mm.

The analogue versions can be used with standard conditioning electronics.

The digital versions are designed to be connected directly onto the Orbit Measurement Network, a modular system enabling fast and versatile connection of multiple probes.

Part No. 501512 Issue 954.0: Components

of the Block Gauge

4.0: Components of the 1mm Block GaugeKey 1 Sensor2 Sensor Grub Screw3 Sensor Grub Screw4 Pneumatic Actuator5 Spring Holder6 Spring7 Tool Holder8 Tip Carrier9 Tip10 Tip Carrier Grub Screw11 Caphead Screw

Part No. 501512 Issue 964.0: Components

of the Block Gauge

4.0: Components of the 2.5 & 5mm Block Gauge

Part No. 501512 Issue 975.0: Care of the Block Gauge

5.0: Care of the Block GaugeThe Block Gauge is a rugged parallel motion Universal Gauge designed to withstand the rigours of an industrial manufacturing environment. However, care should be taken during installation to avoid dropping the Block Gauge or subjecting it to severe shock loads.

In order to avoid damage to the linear bearings, it is important not to exceed the specified torque setting (1.5 to 2N m) of the fixing screw (11) when adjusting the tool holder (7).

The contact tip (9) should be fitted to the tip carrier (8) and tightened before the tip carrier is fitted to the tool holder. Tip carriers are available in 20 mm, 30 mm and 40 mm versions.

Part No. 501512 Issue 986.0: Mechanical Installation

6.0: Mechanical InstallationFirst establish the orientation in which the Block Gauge will be used. The choice of return spring (6) and its position depends on the orientation of the gauge and should be made after the tool holder (7) and contact tip (9) have been fitted. A set of return springs (for different measurement forces) are included with each gauge.

It may be easier to set contact tip forces as close as possible to operating forces before the Block Gauge is installed onto a machine or fixture. Final adjustments may then be made after installation. Final adjustment of the spring force is made by winding the spring holder (5) in or out. (section 6.3)

When fitting a pneumatic actuator (4), ensure that the threads in the Block Gauge and the actuator are clean. In order to avoid damage to the actuator or the Block Gauge, it is important not to exceed the specified air pressure.

When mounting the Block Gauge in a fixture, care must be taken not to drop the gauge or apply excessive shocks which may degrade performance.

CAUTIONThe pneumatic Block Gauge generally works at a higher air pressure than pneumatic gauging probes (recommended pressure range 1 - 3 bar). In order to avoid damage to gauging probes when used in conjunction with Block Gauges, it is important that separate air pressure regulators are used for each product type.

Anti rotation adjustment Return Spring (6)

Tool Holder (7)

Tip Carrier (8)

Sensor (1)

Pneumatic Actuator (4)

Spring Holder (5)

Tip (9)

It should be secured by using the fixing screws at the base of the Block Gauge. The fixing screws are M6. The thread depth in the body is 8 mm.

Part No. 501512 Issue 99

6.0: Mechanical Installation (continued)

6.0: Mechanical Installation

6.1: Tip Installation/Replacement To avoid placing strain on the tool holder (7) and the Block Gauge frame, the tip carrier (8) should be removed from the tool holder before fitting or removing a tip (9).

The Block Gauge tool holder allows the Block Gauge tip and tip carrier to be mounted in one of three different planes for maximum flexibility.

Tip Removal1. Loosen the 2.5 mm tip carrier grub screw (10) `which holds the tip carrier (8) in place.

2. Remove the tip carrier from the tool holder (7).

3. Unscrew the tip (9) from the end of the tip carrier.

Tip Installation1. Screw the tip (9) into the tip carrier (8).

2. Position the tip carrier in the tool holder (7).

3. Tighten the 2.5 mm tip carrier grub screw (10). Take care not to overtighten it.

Tip Carrier Grub Screw (10)

Tip (9)

Tip Carrier (8)

Tool Holder (7)

Part No. 501512 Issue 910

6.0: Mechanical Installation (continued)

6.0: Mechanical Installation

6.2: Tool Holder Installation/Adjustment The tool holder is infinitely adjustable along the industry standard dovetail fitting on the Block Gauge frame. This dovetail fitting ensures that the gauge is rigid yet easy to install and adjust.

Tool Holder Adjustment1. Loosen the caphead screw (11) located on the tool holder (7) using a 3 mm Allen key.

2. Slide the tool holder to the required position.

3. Tighten the screw.

CAUTIONIn order to avoid damage to the linear bearings, it is important not to exceed the specification for the torque setting (1.5 to 2 Nm) of the fixing screw when adjusting the tool holder.

Tool Holder InstallationTo remove the tool holder (7), loosen the caphead screw (11) located on the tool holder using a 3 mm Allen key. Slide the tool holder off the dovetail.

To re-install the tool holder, simply slide it over the dovetail joint to the required position and then tighten the caphead screw.

Caphead Screw (11)

Dovetail Fitting

Tool Holder (7)

Part No. 501512 Issue 911

6.0: Mechanical Installation (continued)

6.0: Mechanical Installation

6.3: Spring Installation/Adjustment The choice of spring return and its position depends on the orientation of the gauge and should be made after the tool holder and contact tip have been fitted. (See section 6.2). A set of four return springs are included with each gauge.

1. Unscrew and remove the spring holder (5) or pneumatic actuator (4) if this was being used.

2. Remove the spring (6) if installed.

5

4

6

3. Select an appropriate spring, and insert this into the frame.

4. Insert the screw holder back into the Block Gauge frame and screw in.

5. Final adjustment to the spring force is made by winding the spring holder in or out using a flat blade screwdriver.

Refer to section 10.2 for information on the configuration of the spring and pneumatic actuator.

Part No. 501512 Issue 912

6.4: Pneumatic Actuator Installation1. Unscrew and remove the spring holder (5).

2. Remove the spring (6) if it is installed.

3. Install a spring and spring holder opposite to where the pneumatic actuator is to be installed (section 6.3).

4. Insert the pneumatic actuator (4) and screw until tight. Do not overtighten.

4

6

5

6.0: Mechanical Installation

6.0: Mechanical Installation (continued)To maximise the working life of the Block Gauge, the air supply should be both clean and dry for continual reliable operation. The air should have a maximum relative humidity of 60% RH and be filtered to better than 5 µm particle size.

When fitting a pneumatic actuator, ensure that threads in the Block Gauge and the actuator are clean. In order to avoid damage to the actuator or the Block Gauge, it is important not to exceed the specification for air pressure.

CAUTIONThe pneumatic Block Gauge generally works at a higher air pressure than pneumatic gauging probes (recommended pressure range 1 - 3 bar). In order to avoid damage to gauging probes when used in conjunction with Block Gauges, it is important that separate air pressure regulators are used for each product type.

Part No. 501512 Issue 9137.0: Maintenance

7.0: Maintenance7.1 Sensor Replacement - Analogue Version Only

Sensor Removal1. Loosen the two sensor grub screws (2 & 3) which hold the sensor (1) in place.2. Gently ease the sensor away from the frame. Care must be taken not to damage the core or the gaiter during removal.

Sensor Installation1. Insert the replacement sensor (1) into the Block Gauge frame. Care must be taken not to damage the core or the gaiter during insertion. The carrier must not protrude from the T-piece.2. Tighten sensor grub screw (3), but leave screw (2) loose. 3. Adjust the spring holder (5) opposite the sensor so that there is a small gap of approximately 0.25 mm between the T-piece and the frame (see below).

Adjustment of spring holder

Small Gap of approx. 0.25 mmSensor Grub Screw (3) Sensor Grub Screw (2)

Sensor (1)

Part No. 501512 Issue 9147.0: Maintenance (continued)

7.0: Maintenance (continued)4. Connect an oscillator supply to the sensor.

5. Monitor the output of the sensor on a DVM.

6. Move the T-piece in by the pre-travel (typically 0.15 mm) + rated stroke. The T-piece must remain fixed in this position during the setting of electrical null.

7. Adjust the position of the sensor relative to the frame to achieve minimum output on the DVM. Care should be taken not to rotate the sensor during this adjustment. This is electrical null.

8. Tighten sensor grub screw (2).

Part No. 501512 Issue 915

8.1: MeasurementAnalogue

Measurement Range (mm) ±1.0 ±2.5 ±5.0Mechanical Travel (mm) 3 mm 6 mm 11 mmAccuracy(1) ±1.0 mm

±2.5 mm±5.0 mm

±1.0 µm or ±0.5% x D±2.5 µm or ±0.5% x D±5.0 µm or ±0.5% x D(whichever the greater)

at 5 kHz for LVDT, at 10 kHz for half bridgeRepeatability(on-axis at 70 g tip force)

±1.0 mm±2.5 mm±5.0 mm

0.25 µm0.25 µm0.50 µm

Resolution Dependent on ElectronicsNull Position AdjustableTip Force(2) ±1.0 mm

±2.5 mm±5.0 mm

0.75 N minimum

Temperature Coefficient ±1.0 mm±2.5 mm±5.0 mm

± 0.2 µm/°C± 0.5 µm/°C± 1.0 µm/°C

Life Better than 5 million measuring cycles (dependent on application)

8.0: Specifications

8.0: Specifications

Part No. 501512 Issue 9168.0: Specifications (continued)

8.0: Specifications (continued)Accuracies quoted are through the gauge centreline. Unplugged (free lead) and other specification available on request.

(1) Accuracy includes both linearity and sensitivity errors (D is the distance from setting master).

(2) Maximum tip force is 3.5 N. A selection of springs can be supplied for attitude and dead weight compensation. Care should be taken as the probe performance (accuracy and repeatability) may degrade at high tip forces.

Part No. 501512 Issue 9178.0: Specifications (continued)

8.0: Specifications (continued)8.1: Measurement Note 1: The linearity specification includes errors due to both linearity and sensitivity. Other manufacturers may quote these errors separately. These linearity specifications are substantially more demanding than the 0.25% full scale conventionally specified, as shown in the diagram below.

-1.0mm

µm

2.55.07.510.012.5

0

-2.5

-5.0-7.5-10.0

-12.5

0.25% of full scale output

0.25% of full scale output

Analogue

Solartron Analogue Block Gauge Specification

-0.5-1.5-2.0-2.5 2.52.01.51.00.5

Note: Example is for ±2.5 mm Block Gauge

Part No. 501512 Issue 918

8.0: Specifications (continued)8.2: Mechanical

AnalogueMass (g / lbs)(Without toolholder)

±1.0 mm±2.5 mm±5.0 mm

160 g (0.352 lbs)390 g (0.858 lbs)385 g (0.847 lbs)

Mass of moving parts (g / lbs)

±1.0 mm±2.5 mm±5.0 mm

35 g (0.077 lbs)90 g (0.198 lbs)95 g (0.209 lbs)

Material Stainless Steel (300 Series) with Fluoroelastomer GaitersIP Rating IP65 IP65

IP43 for electronicsOperating Pressure 1 bar to 3 bar

8.3: EnvironmentalAnalogue

Storage Temperature (°C) -40 to +85Operating Temperature (°C) +5 to +85Shock To maintain best performance, the Block Gauge should be protected

from excessive shock loads and dropping

8.0: Specifications

Part No. 501512 Issue 9198.0: Specifications

8.0: Specifications (continued)8.4: Electrical Interface

AnalogueLVDT Half Bridge

Energising Voltage 1 to 10 VrmsEnergising Frequency 2 to 20 kHzEnergising Current 2 mA/V at 5 kHz 2 mA/V at 10 kHzCalibration Voltage 3 VCalibration Frequency 5 kHz 10 kHzCalibration Load 10 KΩ 2 KΩSensitivity (mV/V/mm)

±1.0 mm±2.5 mm±5.0 mm

200 ±0.5%80 ±0.5%40 ±0.5%at 5 kHz

73.5 ±0.5%29.4 ±0.5%14.7 ±0.5%at 10 kHz

Note: Operation outside of calibration voltage, frequency and load may degrade performance.

Part No. 501512 Issue 9209.0: Connections

9.0: Connections9.1: Analogue Block GaugeLVDT Electrical Connections

Note: + indicates forward movement of the tip.

LVDT Electrical ConnectionsRed & Blue Energising

Green & White SignalYellow Secondary Centre Tap

Red & White In Phase for Inward Displacement

1

23

4

5

-

+LVDT

Case

YellowWhite

Green

Red

Cable Screen

1

23

4

5

-

+

Cable Screen

HalfBridge

Case

Blue

Yellow

Red

Half Bridge Electrical Connections

Note: + indicates forward movement of the tip.

Half-Bridge Electrical ConnectionsRed & Blue Energising

Yellow SignalRed & Yellow In Phase for Inward Displacement

Screen Transducer Body Ground

Part No. 501512 Issue 92110.0: Outline Drawings

10.0: Outline Drawings 10.1: Mechanical Drawings

CAD drawings can be downloaded fromwww.solartronmetology.com

2 mm Block Gaugeeg BG/1/S

Part No. 501512 Issue 92210.0: Outline Drawings

10.0: Outline Drawings (continued)10.1: Mechanical Drawings

5 mm Block Gaugeeg BG/2.5/S

Part No. 501512 Issue 923

10.0: Outline Drawings (continued)10.1: Mechanical Drawings

10.0: Outline Drawings

10 mm Block Gaugeeg BG/5/S

24Part No. 501512 Issue 6

10.0: Outline Drawings

10.0: Outline Drawings (continued)10.2: Configuration Drawing